Create Water were appointed to remove an Environment Agency objection against surface water drainage proposals for a planned new builders merchants on Banningham Road, Aylsham. The Environment Agency filled their objection as the site lies in an area where groundwater is very sensitive to the risk of pollution due to its proximity to nearby public water abstraction boreholes. With this in mind the Environment Agency would not allow any surface water (except for that from roofs) to be discharged to the ground.

In order to remove this objection Create Water worked in close liaison with Anglian Water and the Environment Agency to agree a restricted outfall to a nearby Anglian Water surface water sewer. Water quality measures were also incorporated in the designs to ensure the water leaving the site was clean and at the required standard for discharge to the Anglian Water network. These water quality measures included filter trenches and a hydrocarbon interceptor.